Heh, yep -- for me, it's, "I used to notice the effects more strongly"! :D Now that I've got a multiple-pots-per-day (on average) habit, it's like drinking water. Several of my online friends who've had to drop caffeine for whatever reason have had the same thing happen to them that you're noticing, though -- when they pick it up again, they're back to "beginner level" when it comes to the caffeine effect. :D